Problem with LTTV-gui Filtering

Hello,

I've got a trouble with LTTV-gui filter, in particular with filtering by PPID. 
After applying this filter, it remains some process which do not have the elected PPID.
Another question : is it shceduled to introduce a sort by priority in the Control Flow Viewer ?

Thanks,

Best Regards, Mikaël Castor.

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